Assessment of Seawater Intrusion into Shallow Coastal Aquifer in Kanyakumari District, Tamilnadu, India
S. Sivaranjani1, A. Sangeetha2, P. Sathees Kumar3, D. Zunaithur Rahman4
1S. Sivaranjani*, Assistant Professor, Department of Civil Engineering, Vel Tech Rangarajan Dr.Saguntala R&D Institute of Science and Technology Chennai, Tamil Nadu, India.
2A. Sangeetha, Assistant Professor, Department of Civil Engineering, Vel Tech Rangarajan Dr.Saguntala R&D Institute of Science and Technology Chennai, Tamilnadu, India.
3P. Sathees Kumar, Assistant Professor, Department of Civil Engineering, Mohamed Sathak Engineering College, Kilakarai, Tamil Nadu, India.
4D. Zunaithur Rahman, Assistant Professor, Department of Civil Engineering, Mohamed Sathak Engineering College, Kilakarai, Tamil Nadu, India.
Manuscript received on December 12, 2019. | Revised Manuscript received on December 25, 2019. | Manuscript published on January 10, 2020. | PP: 3006-3014 | Volume-9 Issue-3, January 2020. | Retrieval Number: B6345129219/2020©BEIESP | DOI: 10.35940/ijitee.B6345.019320
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Improved use of groundwater is often causing intrusion of seawater. The intrusion of seawater also takes place in coastal areas. In this analysis, the distribution and the levels of intrusion in the research area (Kanyakumari district, Tamil Nadu, India) are determined. The test was done using random samples at a period of 15 days in which 30 different samples were taken in 5 different locations with a certain distance from the seashore, then chemical analysis including pH, electrical conductivity (EC), total dissolved solids (TDS), chloride, sodium, calcium, magnesium, carbonate, and bicarbonate water quality parameters were carried out. Chloride Bicarbonate Ratio was used for the calculation of the penetration rate of the seawater, and subsequently chloride and electric conductivity were defined as type and quality of water characters. The results showed that the shallow aquifer was intruded by seawater at several sample levels, which was included in the normal to high intrusion classification. The sea water intrusion was classified as freshwater to saltwater, the concentrations in chloride ranged from 159 to 6021 mg / L. The ratio of bicarbonate chloride was 0.28 to 21.46, normally above 15.5, indicating that groundwater was disturbed. As a result, in comparison to standards or other seawater intrusion indicators, Rajakamangalam-well 1 (RM-W1) has been affected by seawater intrusion highly.
Keywords: Aquifer, Hydrochemical Parameters, Groundwater, Indicator, Seawater intrusion
Scope of the Article: Water Supply and Drainage